Luis “Louie” Carrillo (3-3-12)

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KENOSHA -- Officials say a Kenosha man's home became a crime scene, but before investigators could catch up to an accused rapist, he ran, and hasn't been seen since last fall.

67-year-old Luis "'Louie" Carrillo is wanted in connection with child sexual assault charges. Kenosha police say Carrillo met a young mom and began a relationship with her. He then welcomed her two and three-year-old daughters into his home. "He sent her a letter stating that he loved her and cared for her. He wanted her and the kids to move in with him," Kenosha Police Detective Warren Denharthog said.

Investigators say they all lived in the home for about three months, and then one of the girls made a shocking admission, accusing Carrillo of assaulting her and her sister. Denharthog described the family's reaction: "Words, anger, there's going to be frustration. There's going to be 'why did this happen?'" Denharthog said.

When the furious mom went to confront Carrillo, she found the home vacant. Now, law enforcement is looking for a fugitive. "He's aware of what he did, and he's aware that we're looking for him, and he's on the run, and he knows he did something wrong," Denharthog said.

Carrillo is described as about 5 foot 6 inches tall and weighing about 170 pounds.

He has ties to the Kenosha area but investigators say he could also be hiding out with friends or family in south Carolina, Texas or Mexico.

If you have any information U.S. Marshals want to hear from you. Their number is 414-297-3707.